Alloy tool steel

International Equivalent

general characteristics

Alloy Steel — iron alloy with certain components which during the manufacture and processing of the alloy impart the desired structure and properties. Marking. Main dopants are labeled as follows: Tungsten — V, Nb — B, manganese — T, copper — D, selenium — E, cobalt — K molybdenum — M Ni — H, phosphorus — P cerium — P silicon — C titanium — T vanadium — F, chrome — the X, Zr — C, aluminum — Y. The numbers after the letters reflect the rounded contents of this or that element. When the number of elements less than 1.5% figure for the alphabetical index does not lead. The admixture of carbon indicate the beginning of the brand in hundredths of a percent (structural steel) or tenths (tool steels).

making

Tool alloy steel made in accordance with GOST 5950−2000. This standard specifies the production of high-quality standards, and flat-rolled products with additional surface treatment alloy and tool steel, as well as manufacturing standards for steel 3H2MNF, 4HMNFS, 9HFM, billets, ingots, ribbons, forgings, tubes and similar products.

The chemical composition of the material in%

mark

C

Si

Mn

S

Ni

P

Cr

Mo

W

V

Cu

8H4V2MFS2

0.8 — 0.9

1,7−2

0.2 — 0.5

<0.03

<0.35

<0.03

4.5 — 5.1

0.8 — 1.1

1.8 — 2.3

1.1 — 1.4

<0.3

CVH

0.9 — 1.05

0.1 -0.4

0.8 — 1.1

<0.03

<0.35

<0.03

0.9 — 1.2

<0.3

1.2 — 1.6

-

<0.3

5HV2SF

0.45 -0.55

0.8 -1.1

0.15 -0.45

<0.03

-

<0.03

0.9 — 1.2

-

1.8 — 2.3

-

0.15 — 0.3

The hardness of the material after annealing 8H4V2MFS2

HB 10 -1 = 255 MPa

CVH Material hardness after annealing

HB 10 -1 = 255 MPa

The hardness of the material after annealing 5HV2SF

HB 10 -1 = 229 MPa

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